never mind, I figured out how to do the inverse, but had to see it through a 2x2 matrix first. I'm still bad at doing the Guassian elimination matrix though unless I write out as a linear system of equations, but I don't want to keep on converting it to a linear system to solve..I just want to solve through matrix form.

The basic process is to hold the first row first column element constant while getting the 1st col, 2nd & 3rd to zero. Remembering to join a matrix of the same dimension (n*n) as an adjoint i.e. n*2n cols. The goal: shift the three right columns to the left by repeating the process in the first sentence, only in the second column the middle integer is reduced to 1 while the numbers above and below are reduced to 0.

This is fairly simple on a three by three matrix, gets trickier the higher one goes i.e. 5*5. At times there is no inverse so don't chase for a no answer situation. Solutions of inverses can be found on the Web using Google.